✦ LIBER ✦

Long-Term Measurement of Tremor

✍ Scribed by Sybille Spieker; A. Boose; S. Breit; J. Dichgans

Publisher: John Wiley and Sons
Year: 2008
Tongue: English
Weight: 275 KB
Volume: 13
Category: Article
ISSN: 0885-3185
DOI: 10.1002/mds.870131314

No coin nor oath required. For personal study only.

✦ Synopsis

To account for the fluctuating and context-dependent nature of tremor, the method of ambulatory long-term electromyography (EMG) was developed for quantification of this symptom. It is based on successive evaluation of 15-s intervals by using a fast Fourier transformation (FFT). The standard results obtained are (a) tremor occurrence, a measure of how many intervals contain tremor; (b) mean tremor intensity; and (v) mean tremor frequency. This new method fulfills the so-called "test criteria" such as reliability, validity, sensitivity, and specificity for tremor quantification in essential tremor (ET) and Parkinson's disease (PD). In addition, we developed a method of determining the antagonist activation pattern by using cross-correlation analysis, also based on the long-term approach. This allows differentiation between ET and PD with a high sensitivity and a high interrater reliability. We conclude that long-term EMG is useful for both quantification and differentiation of tremor.

📜 SIMILAR VOLUMES

New actigraph for long-term tremor recor

New actigraph for long-term tremor recording

✍ Eus J.W. Van Someren; Myrthe D. Pticek; Johannes D. Speelman; Peter R. Schuurman 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 270 KB

A new method of movement analysis is validated, allowing an actigraph to discriminate tremor from other movements and store duration and intensity measures of both movement types. For algorithm optimization, wrist acceleration was recorded in nine controls and nine Parkinson's disease patients, whil

Clinical Measurement of Tremor

✍ P. G. Bain 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 264 KB

Multidimensional evaluations are recommended for the assessment of tremor severity in clinical trials. The precise method of measuring a particular tremor influences the results of the measurement. Furthermore, complex natural tremor amplitude perturbations introduce the potential for sampling error

Long-term follow-up of thalamic stimulat

Long-term follow-up of thalamic stimulation versus thalamotomy for tremor suppression

✍ P. Richard Schuurman; D. Andries Bosch; Maruschka P. Merkus; Johannes D. Speelma 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 107 KB

## Abstract Thalamic stimulation and thalamotomy for treatment of tremor due to Parkinson's disease, essential tremor, and multiple sclerosis were compared in a randomized trial. The symptomatic and functional outcome was studied after 5 years of follow‐up. Sixty‐eight patients were treated (45 Par

Psychogenic tremor: Long term prognosis

Psychogenic tremor: Long term prognosis in patients with electrophysiologically-confirmed disease

✍ Andrew McKeon; J. Eric Ahlskog; James H. Bower; Keith A. Josephs; Joseph Y. Mats 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 105 KB

## Abstract We describe the presenting features and long‐term outcomes of patients with electrophysiologically‐confirmed psychogenic tremor. Clinical information for all patients with psychogenic tremor confirmed by our Movement Disorders Neurophysiology Laboratory (2003–2004) was reviewed. A follo

Long-term measurement of bone strainin v

Long-term measurement of bone strainin vivo: The rat tibia

✍ Rabkin, Brian A. ;Szivek, John A. ;Schonfeld, Julie E. ;Halloran, Bernard P. 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 231 KB

Long-term efficacy of thalamic deep brai

Long-term efficacy of thalamic deep brain stimulation for tremor: Double-blind assessments

✍ Stig Rehncrona; Bo Johnels; Håkan Widner; Anna-Lena Törnqvist; Marwan Hariz; Olo 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 106 KB 👁 1 views

## Abstract Thalamic deep brain stimulation (DBS) is proven to suppress tremor in Parkinson's disease (PD) and essential tremor (ET). However, there are few reports on its long‐term efficacy. We studied the efficacy of DBS at 2 years and 6–7 years after electrode implantations in the ventrointermed